package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.entity.SetmealDish;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealDishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import sun.dc.pr.PRError;

import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * 菜品管理
 */
@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {
    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;

    /**
     * 新增菜品
     *
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);

        return R.success("新增菜品成功");
    }

    /**
     * 菜品信息分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {

        //构造分页构造器对象
        Page<Dish> pageInfo = new Page<Dish>(page, pageSize);
        Page<DishDto> dishDtoPage = new Page<DishDto>();

        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<Dish>();
        //添加过滤条件
        queryWrapper.like(name != null, Dish::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);

        //执行分页查询
        dishService.page(pageInfo, queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo, dishDtoPage, "records");

        List<Dish> records = pageInfo.getRecords();

        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item, dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    /**
     * 根据 id 查询菜品信息和对应的口味信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id) {

        DishDto dishDto = dishService.getByIdWithFlavor(id);

        return R.success(dishDto);
    }

    /**
     * 修改菜品
     *
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());
        dishService.updateWithFlavor(dishDto);

        return R.success("修改菜品成功");
    }

    /**
     * 菜品启售/停售（单个或批量）
     *
     * @param status
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> status(@PathVariable("status") Integer status, @RequestParam List<Long> ids) {
        log.info("status:{}", status);
        log.info("ids:{}", ids);

        dishService.status(status, ids);

        return R.success("售卖状态修改成功");
    }

    /**
     * 批量删除菜品 或 删除单个菜品
     *
     * @param ids
     * @return
     */
    @DeleteMapping
    public R<String> delete(@RequestParam("ids") List<Long> ids) {
        log.info("删除分类，ids 为：{}", ids);

        //删除菜品（此处的删除操作为逻辑删除）
        dishService.deleteByIds(ids);

        //删除菜品对应的口味（逻辑删除）
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<DishFlavor>();
        queryWrapper.in(DishFlavor::getDishId, ids);
        dishFlavorService.remove(queryWrapper);

        return R.success("删除成功");
    }

    /**
     * 根据条件查询对应的菜品数据
     *
     * @param dish
     * @return
     */
    /*
    @GetMapping("/list")
    public R<List<Dish>> list(Dish dish) {
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<Dish>();
        //添加查询条件
        queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
        queryWrapper.eq(Dish::getStatus, 1);
        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        //调用 service 方法拿到 list 集合
        List<Dish> list = dishService.list(queryWrapper);
        return R.success(list);
    }
    */

    /**
     * 根据条件查询对应的[菜品数据]和[菜品口味]的数据
     *
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish) {

        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<Dish>();
        //添加查询条件
        queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
        queryWrapper.eq(Dish::getStatus, 1);
        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        //调用 service 方法拿到 list 集合
        List<Dish> list = dishService.list(queryWrapper);

        /* *********************************************************** */
        List<DishDto> dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item, dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据 id 查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            //获取的当前菜品的 id
            Long dishId = item.getId();

            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<DishFlavor>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId, dishId);
            //最终获取到了口味的集合对象：select * from dish_flavor where dish_id = ?
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);

            return dishDto;
        }).collect(Collectors.toList());
        /* *********************************************************** */

        return R.success(dishDtoList);
    }
}
